Means for wrapping packages



June 1940- E. A. NORDBERG MEANS FOR WRAPPING PACKAGES Filed March 9,1938 TTORNEY Patented June 4, 1940 UNITED STATES PATENT OFFICE Ernst A.Nordberg, Sharon, Mass., assignor to Bandaway Inc., Boston, Mass.

Application March 9, 1938, Serial No. 194,910

3 Claims.

The present invention relates to a machine for wrapping bundles,particularly bundles containing cloth materials, as for instance,curtains, sheets, shirts or any other type of bundle in which it isdesired to place a number of similar articles together as for instancein half dozen or dozen lots.

It has been common in wrapping such articles to use a strip cut to size,place the strip around the article to be wrapped and then either stapleor glue the ends of the strip together. For the most part this has beendone either entirely by hand or partly by machinery that is manuallyoperated. The latter type of device is shown in the copendingapplication of Sumner S. Gordon,

Serial No. 176,421, filed November 26, 1937. In this application justmentioned, two operations are required to complete the wrapping, the operator first advances the paper or strip with a movement of the arm, andthen, after placing the bundle in position, brings the two ends of thestrips together and operates the stapling mechanism.

- In the present application the feeding is done automatically and insuch a manner that it will not interfere with the bundle that ispreviously being wrapped. Other purposes and advantages of the presentinvention will be more readily understood in connection with thespecification given below describing an embodiment of the presentinvention illustrated in the drawing in which:

Figure 1 shows the present machine in an elevation.

Figure 2 shows a plan view looking from the top of Figure '1.

Figure 3 shows a sectional view taken on line 3 3 of Figure 2.

Figure 4 shows a section view taken on the line 4--4 of Figure 1.

Figure 5 shows a section taken on the line 5-5 of Figure 4, and,

Figure 6 shows a section taken on the line 6-6 of Figure 3.

In the present invention the device may be mounted upon a bench or frameI as indicated in Figure l and comprises two upright supporting sides 2and 3, the support 2 containing the strip feeding mechanism 4 forfeeding the paper strips 5 from the roll 6. The strip feed mechanism 4may be of the usual type comprising a series of rollers and gearsthrough which the paper strip 5 is inserted and threaded with meansprovided for allowing the strip to be advanced and mechanism forrepeating the operation of advancing and feeding the paper in determinedlengths upon each operation of the device.

As indicated in Figure 1, the paper 5 is advanced between rollers l and8 to the position of cutting and stapling by any usual and suitable thestapling machine in the manner as will be indicated below.

Two ears 9 and I extend respectively from the side supports 2 and 3 andpivot the shaft I4 upon which the arms II and I2 are mounted. The armsII and I2 at their other ends carry links l which connect from the armsH and I2 to the upright bar N5 of the stapling mechanism. Pivoted at thefront portion of the bars I and I2 are two extending prongs or links I 1and I8, which as indicated in Figure 3 have pins I9 and 20 respectivelywhich lock into the holes in the bars II and i2. These bars I1 and I8are pivoted at their other ends by means of the pivots 2| and 22 toslide bars 23 and 24 respectively which slide bars may be operablyconnected to the foot lever 25 as will be described.

The stapling device l3 has a supply barrel 26 pivoted as indicated inFigure 1 in the support 21 extending from a base plate 28 fastenedacross from the side 2 to the side3 of the frame, so that when the armsI! and I8 are moved downward, the front portion of the staplingmechanism will descend downward and staple the paper that is positionedjust beneath it. On the inside of the side elements 2 and 3 are groovedplates 30 and 3| in which the bars 32 and 33 slide up and down asindicated in Figure 3. These bars 32 and 33 at their lower ends arejoined by the cross bar 34 from which the operating rod 35 extends whichis linked at 36 to the foot lever 25. Also linked across the bars 32 and33 is the bar 40, the pur pose of which will be explained later. Thebars 23 and 24 also slide respectively within the grooved plates 30 and3 I. These bars are spanned by the cross bar 31 which carry pivoted ateach end the latch or link mechanisms 38 and 39. Both latch elements 38and 39 are pivoted as indicated in Figure 1 by the rod 31. These latchelements have a horizontally extending bar 4|, 2. vertical dependentmember 42 which is cut in a C shape fashion with diagonally latchingelements 43. A spring 44 bears down on the outer portion of the arm 4|holding the latch 43 in contact with the rod 40 and beneath it. In thisposition as indicated in Figure 1, the foot lever 25 is coupled to thestapling device through the latch 43 latching under the rod 40 carriedby the bars 32 and 33 so that when the foot lever 25 is depressed thebars 23 and 24 and the links H and [8 to which they are joined will bemoved downward and carry with them the pivoted rods II and i2 which holdthe stapling machine through the links Hi. When the mechanism is pulleddownward to force the arm 4| of the latching mechanism against the endof the screw 45 which may be adjusted to its proper position, the arm 4|will remain blocked while the rod 40 will continue to be drawn furtherdownward, thus pushing aside the latch 43 until the rod 40 is 'footlever 25 comes down further, the cable 48 which has, during theoperation described, travelled in the direction of the arrow 49,continues to travel in the same direction thereby allowing the stripfeeding machine to move in the direction of the arrow 50. This actionpositions the strip feeding mechanism so that when the lever 25 is againreleased and the spring El acts to pull the free end of the leverupwards, the strip feeding mechanism will rotate in the directionopposite to the arrow 50 and cause the rollers 'l and 8 to move in sucha manner as to again feed the strip 5 beneath the stapling device. Whenthe rod 48 is in a position below the latch $3 the upper mechanism isentirely free from the lower mechanism. When, however the foot lever 25is pulled upward by the spring 5!, the rod 4t is moved upward and forcesthe latch 93 to the left in the position shown in Figure 1 and finallyrises above it in the position as indicated. in Figure 1. The spring 44serves to press the latch 38 back in its normal position by exertingpressure upon the arm ll of the latch mechanism.

The cutting means is indicated more clearly in Figures 4 and 5. Thecutting plate M is mounted beneath the stapling device it and abutsin'its normal position when not used against the upright extending posts68 and iii projecting from the lower cutting plate 62. The whole lowercutting plate is held in position against the upper plate by means thesprings 63 and M which set in recesses in the base of the lower plateand press against the lower plate 65 operating in slots in the blocks 83and 8 3 mounted on the side plates 2 and 3, by being mounted on thecross support 66 across the frames 2 and 3. As the stapling means isbrought downward the cutting edges H! of the upper and lower plates cometogether with the lower plate always pressed against the upper plate bymeans of the actions of the springs 63 and 64 so that even though theplates wear, their edges are always insured of being together.

In the operation of the mechanism, the operator threads the strip 5through the strip feeding mechanism bringing the paper between thecutting and stapling jaws.

A proper guide plate may be used to guide the strip to this position.The strip feeding mechanism as in the previous companion application isset for the desired length of strip. The apparatus is then ready to beused and the operator may press the foot lever in order to advanceinitially the strip for the proper length. This strip is then placedaround the package to be wrapped and the end of the strip brought backupon the strip itself underneath the stapling head. The operator thenagain presses the foot lever 25 which staples the two ends of the striptogether and holds the foot lever in the lower position until thepackage is removed. When the foot lever is raised the mechanism holdingthe strip feeding device is thereby released and as the lever comes up,the strip is fed in position for the operator to place the second bundleto be wrapped over the strip. The operator then brings the end of thestrip back to the strip again and the stapling is repeated in the samemanner as previously described. The operator therefore in handling themachine needs only to bring the end of the strip back upon itself andpress the foot lever once to complete and finish the wrap-ping of thepackage.

Having now described my invention, I claim:

1. A machine of the type described comprising in combination a stripserving device and a stapling device having a stapling head, meanspivoting said stapling device at the end away from the stapling head, afoot treadle for pulling the stapling head down for stapling the stripserved, means normally connecting the treadle to said head, said meanscomprising means attached to said head having a vertically sliding bar,a pivoted latch mechanism attached to said sliding bar, a cross barattached to said treadle normally engaging said pivoted latch, meansoperative upon drawing the treadle down for releasing the cross bar fromsaid latch and thereby releasing said stapling head and meansoperatively connecting said strip serving device with 1 treadle foradvancing the strip from the strip serving device upon the release ofthe treadle.

2. A machine of the type described comprising in combination a stripserving device and a stapling device having a stapling head, meanspivoting said stapling device at the end away means operative upondrawing the treadle downfor releasing the cross bar from said latch andthereby releasing said stapling head and means operatively connectingsaid strip serving device with said treadle for advancing the strip.from the strip serving device upon the releasing of the treadle.

3. A machine of the type described comprising in combination a stripserving device and a stapling device having a stapling head, meanspivoting said stapling device at the end away from the stapling head, afoot treadle for pulling the stapling head down for stapling the stripserved, means normally connecting the treadle to said head, said meanscomprising means attached to said head having a vertically sliding bar,a pivoted latch mechanism attached to said sliding bar, a cross barattached to said treadle normally engaging said pivoted latch, meansoperative upon drawing the treadle down for releasing the cross bar fromsaid latch and thereby releasing said stapling head and meansoperatively connecting said strip serving device with said treadlecomprising a belt means connected to the opposite side of the treadle towhich the stapling head is connected and means adapted I to move saidbelt in a direction opposite to the direction of the connection to saidstapling head whereby the strip from the strip serving mecha- ERNST A.NORDBERG.

